Answer:
The answer is "From the time they turn one to the time they turn three"
Step-by-step explanation:
I got it from the section in the assignment it says that "Generally, children are considered toddlers from the time they turn one until they turn three. Toddlers grow rapidly, in terms of gaining both height and weight, and this is the most active of any phase in terms of locomotion and language acquisition."
Hope this helps!!!!